Arch Linux

easylearn

Member

Registered: 2023-07-05

Posts: 7

[SOLVED] No internet in VMs since 6.9.2 upgrade.

I upgraded my arch system from 6.9.2 kernel to the current kernel 6.9.6.

After this upgrade, my Libvirt/QEMU VMs don't seem to be able to establish an internet connection (see #1). I did not change a thing. Just upgraded.

When I downgrade my system back to 6.9.2, the VMs get an internet connection again.

I have no idea what's going on. Any tips what to do or look for?

#1: command "systemctl status NetworkManager" inside a Linux Mint VM

Jun 27 14:00:34 pyuuta NetworkManager[713]: <warn>  [1719489634.8896] device (enp9s0): Activation: failed for connection 'Wired connection 1'
Jun 27 14:00:34 pyuuta NetworkManager[713]: <info>  [1719489634.8897] device (enp9s0): state change: failed -> disconnected (reason 'none', sys-iface-state: 'managed')
Jun 27 14:00:34 pyuuta NetworkManager[713]: <info>  [1719489634.9069] dhcp4 (enp9s0): canceled DHCP transaction
Jun 27 14:00:34 pyuuta NetworkManager[713]: <info>  [1719489634.9080] policy: auto-activating connection 'Wired connection 1' (d331b97a-ded8-3849-86c3-d6bdd4e0db42)
Jun 27 14:00:34 pyuuta NetworkManager[713]: <info>  [1719489634.9086] device (enp9s0): Activation: starting connection 'Wired connection 1' (d331b97a-ded8-3849-86c3-d6bdd4e0db42)
Jun 27 14:00:34 pyuuta NetworkManager[713]: <info>  [1719489634.9087] device (enp9s0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
Jun 27 14:00:34 pyuuta NetworkManager[713]: <info>  [1719489634.9090] manager: NetworkManager state is now CONNECTING
Jun 27 14:00:34 pyuuta NetworkManager[713]: <info>  [1719489634.9092] device (enp9s0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
Jun 27 14:00:34 pyuuta NetworkManager[713]: <info>  [1719489634.9098] device (enp9s0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
Jun 27 14:00:34 pyuuta NetworkManager[713]: <info>  [1719489634.9103] dhcp4 (enp9s0): activation: beginning transaction (timeout in 45 seconds)

EDIT 28th June 2024, solution found!
You need to set the firewall_backend=iptables option in /etc/libvirt/network.conf since we are using iptables-nft instead of nftables. Then restart libvirtd service.

Solution found here https://bbs.archlinux.org/viewtopic.php … 4#p2178694 thanks to adonesp

Last edited by easylearn (2024-06-28 12:53:34)